-87.83% is the change from 748 to 91
Calculation steps:
[( 91 - 748 ) ÷ 748] x 100 = -87.83%
Formula
Percentage change = [(91 - 748) / 748] x 100
Subtract the new number by the original number
91 - 748 = -657
-657 ÷ 748 = -0.8783422459893048
-0.8783422459893048 x 100 = -87.83%