-87.67% is the change from 738 to 91
Calculation steps:
[( 91 - 738 ) ÷ 738] x 100 = -87.67%
Formula
Percentage change = [(91 - 738) / 738] x 100
Subtract the new number by the original number
91 - 738 = -647
-647 ÷ 738 = -0.8766937669376694
-0.8766937669376694 x 100 = -87.67%