-90.38% is the change from 915 to 88
Calculation steps:
[( 88 - 915 ) ÷ 915] x 100 = -90.38%
Formula
Percentage change = [(88 - 915) / 915] x 100
Subtract the new number by the original number
88 - 915 = -827
-827 ÷ 915 = -0.9038251366120219
-0.9038251366120219 x 100 = -90.38%