-7.7% is the change from 636 to 587
Calculation steps:
[( 587 - 636 ) ÷ 636] x 100 = -7.7%
Formula
Percentage change = [(587 - 636) / 636] x 100
Subtract the new number by the original number
587 - 636 = -49
-49 ÷ 636 = -0.0770440251572327
-0.0770440251572327 x 100 = -7.7%