16.44% is the change from 821 to 956
Calculation steps:
[( 956 - 821 ) ÷ 821] x 100 = 16.44%
Formula
Percentage change = [(956 - 821) / 821] x 100
Subtract the new number by the original number
956 - 821 = 135
135 ÷ 821 = 0.16443361753958588
0.16443361753958588 x 100 = 16.44%