-88.74% is the change from 764 to 86
Calculation steps:
[( 86 - 764 ) ÷ 764] x 100 = -88.74%
Formula
Percentage change = [(86 - 764) / 764] x 100
Subtract the new number by the original number
86 - 764 = -678
-678 ÷ 764 = -0.887434554973822
-0.887434554973822 x 100 = -88.74%