-37.58% is the change from 636 to 397
Calculation steps:
[( 397 - 636 ) ÷ 636] x 100 = -37.58%
Formula
Percentage change = [(397 - 636) / 636] x 100
Subtract the new number by the original number
397 - 636 = -239
-239 ÷ 636 = -0.3757861635220126
-0.3757861635220126 x 100 = -37.58%