-87.9% is the change from 752 to 91
Calculation steps:
[( 91 - 752 ) ÷ 752] x 100 = -87.9%
Formula
Percentage change = [(91 - 752) / 752] x 100
Subtract the new number by the original number
91 - 752 = -661
-661 ÷ 752 = -0.8789893617021277
-0.8789893617021277 x 100 = -87.9%