-88.09% is the change from 764 to 91
Calculation steps:
[( 91 - 764 ) ÷ 764] x 100 = -88.09%
Formula
Percentage change = [(91 - 764) / 764] x 100
Subtract the new number by the original number
91 - 764 = -673
-673 ÷ 764 = -0.8808900523560209
-0.8808900523560209 x 100 = -88.09%