-6.13% is the change from 636 to 597
Calculation steps:
[( 597 - 636 ) ÷ 636] x 100 = -6.13%
Formula
Percentage change = [(597 - 636) / 636] x 100
Subtract the new number by the original number
597 - 636 = -39
-39 ÷ 636 = -0.06132075471698113
-0.06132075471698113 x 100 = -6.13%