-7.93% is the change from 820 to 755
Calculation steps:
[( 755 - 820 ) ÷ 820] x 100 = -7.93%
Formula
Percentage change = [(755 - 820) / 820] x 100
Subtract the new number by the original number
755 - 820 = -65
-65 ÷ 820 = -0.07926829268292683
-0.07926829268292683 x 100 = -7.93%