-8.65% is the change from 821 to 750
Calculation steps:
[( 750 - 821 ) ÷ 821] x 100 = -8.65%
Formula
Percentage change = [(750 - 821) / 821] x 100
Subtract the new number by the original number
750 - 821 = -71
-71 ÷ 821 = -0.08647990255785627
-0.08647990255785627 x 100 = -8.65%