-10.12% is the change from 850 to 764
Calculation steps:
[( 764 - 850 ) ÷ 850] x 100 = -10.12%
Formula
Percentage change = [(764 - 850) / 850] x 100
Subtract the new number by the original number
764 - 850 = -86
-86 ÷ 850 = -0.1011764705882353
-0.1011764705882353 x 100 = -10.12%