-12.74% is the change from 636 to 555
Calculation steps:
[( 555 - 636 ) ÷ 636] x 100 = -12.74%
Formula
Percentage change = [(555 - 636) / 636] x 100
Subtract the new number by the original number
555 - 636 = -81
-81 ÷ 636 = -0.12735849056603774
-0.12735849056603774 x 100 = -12.74%