-7.68% is the change from 820 to 757
Calculation steps:
[( 757 - 820 ) ÷ 820] x 100 = -7.68%
Formula
Percentage change = [(757 - 820) / 820] x 100
Subtract the new number by the original number
757 - 820 = -63
-63 ÷ 820 = -0.07682926829268293
-0.07682926829268293 x 100 = -7.68%