-65.41% is the change from 636 to 220
Calculation steps:
[( 220 - 636 ) ÷ 636] x 100 = -65.41%
Formula
Percentage change = [(220 - 636) / 636] x 100
Subtract the new number by the original number
220 - 636 = -416
-416 ÷ 636 = -0.6540880503144654
-0.6540880503144654 x 100 = -65.41%