9.87% is the change from 821 to 902
Calculation steps:
[( 902 - 821 ) ÷ 821] x 100 = 9.87%
Formula
Percentage change = [(902 - 821) / 821] x 100
Subtract the new number by the original number
902 - 821 = 81
81 ÷ 821 = 0.09866017052375152
0.09866017052375152 x 100 = 9.87%