-87.25% is the change from 690 to 88
Calculation steps:
[( 88 - 690 ) ÷ 690] x 100 = -87.25%
Formula
Percentage change = [(88 - 690) / 690] x 100
Subtract the new number by the original number
88 - 690 = -602
-602 ÷ 690 = -0.8724637681159421
-0.8724637681159421 x 100 = -87.25%