-90.41% is the change from 636 to 61
Calculation steps:
[( 61 - 636 ) ÷ 636] x 100 = -90.41%
Formula
Percentage change = [(61 - 636) / 636] x 100
Subtract the new number by the original number
61 - 636 = -575
-575 ÷ 636 = -0.9040880503144654
-0.9040880503144654 x 100 = -90.41%