To calculate 80% of 2019, we need to understand that percent means "per hundred." So, 80% is equivalent to 80/100 or 0.8 when expressed as a decimal.
The filled portion represents 80% of the total bar.
80% of 2019.01 = 1615.208
80% of 2019.02 = 1615.216
80% of 2019.03 = 1615.224
80% of 2019.04 = 1615.232
80% of 2019.05 = 1615.24
80% of 2019.06 = 1615.248
80% of 2019.07 = 1615.256
80% of 2019.08 = 1615.264
80% of 2019.09 = 1615.272
80% of 2019.1 = 1615.28
80% of 2019.11 = 1615.288
80% of 2019.12 = 1615.296
80% of 2019.13 = 1615.304
80% of 2019.14 = 1615.312
80% of 2019.15 = 1615.32
80% of 2019.16 = 1615.328
80% of 2019.17 = 1615.336
80% of 2019.18 = 1615.344
80% of 2019.19 = 1615.352
80% of 2019.2 = 1615.36
80% of 2019.21 = 1615.368
80% of 2019.22 = 1615.376
80% of 2019.23 = 1615.384
80% of 2019.24 = 1615.392
80% of 2019.25 = 1615.4
80% of 2019.26 = 1615.408
80% of 2019.27 = 1615.416
80% of 2019.28 = 1615.424
80% of 2019.29 = 1615.432
80% of 2019.3 = 1615.44
80% of 2019.31 = 1615.448
80% of 2019.32 = 1615.456
80% of 2019.33 = 1615.464
80% of 2019.34 = 1615.472
80% of 2019.35 = 1615.48
80% of 2019.36 = 1615.488
80% of 2019.37 = 1615.496
80% of 2019.38 = 1615.504
80% of 2019.39 = 1615.512
80% of 2019.4 = 1615.52
80% of 2019.41 = 1615.528
80% of 2019.42 = 1615.536
80% of 2019.43 = 1615.544
80% of 2019.44 = 1615.552
80% of 2019.45 = 1615.56
80% of 2019.46 = 1615.568
80% of 2019.47 = 1615.576
80% of 2019.48 = 1615.584
80% of 2019.49 = 1615.592
80% of 2019.5 = 1615.6
80% of 2019.51 = 1615.608
80% of 2019.52 = 1615.616
80% of 2019.53 = 1615.624
80% of 2019.54 = 1615.632
80% of 2019.55 = 1615.64
80% of 2019.56 = 1615.648
80% of 2019.57 = 1615.656
80% of 2019.58 = 1615.664
80% of 2019.59 = 1615.672
80% of 2019.6 = 1615.68
80% of 2019.61 = 1615.688
80% of 2019.62 = 1615.696
80% of 2019.63 = 1615.704
80% of 2019.64 = 1615.712
80% of 2019.65 = 1615.72
80% of 2019.66 = 1615.728
80% of 2019.67 = 1615.736
80% of 2019.68 = 1615.744
80% of 2019.69 = 1615.752
80% of 2019.7 = 1615.76
80% of 2019.71 = 1615.768
80% of 2019.72 = 1615.776
80% of 2019.73 = 1615.784
80% of 2019.74 = 1615.792
80% of 2019.75 = 1615.8
80% of 2019.76 = 1615.808
80% of 2019.77 = 1615.816
80% of 2019.78 = 1615.824
80% of 2019.79 = 1615.832
80% of 2019.8 = 1615.84
80% of 2019.81 = 1615.848
80% of 2019.82 = 1615.856
80% of 2019.83 = 1615.864
80% of 2019.84 = 1615.872
80% of 2019.85 = 1615.88
80% of 2019.86 = 1615.888
80% of 2019.87 = 1615.896
80% of 2019.88 = 1615.904
80% of 2019.89 = 1615.912
80% of 2019.9 = 1615.92
80% of 2019.91 = 1615.928
80% of 2019.92 = 1615.936
80% of 2019.93 = 1615.944
80% of 2019.94 = 1615.952
80% of 2019.95 = 1615.96
80% of 2019.96 = 1615.968
80% of 2019.97 = 1615.976
80% of 2019.98 = 1615.984
80% of 2019.99 = 1615.992
