-88.14% is the change from 767 to 91
Calculation steps:
[( 91 - 767 ) ÷ 767] x 100 = -88.14%
Formula
Percentage change = [(91 - 767) / 767] x 100
Subtract the new number by the original number
91 - 767 = -676
-676 ÷ 767 = -0.8813559322033898
-0.8813559322033898 x 100 = -88.14%