-74.27% is the change from 855 to 220
Calculation steps:
[( 220 - 855 ) ÷ 855] x 100 = -74.27%
Formula
Percentage change = [(220 - 855) / 855] x 100
Subtract the new number by the original number
220 - 855 = -635
-635 ÷ 855 = -0.7426900584795322
-0.7426900584795322 x 100 = -74.27%