15.23% is the change from 821 to 946
Calculation steps:
[( 946 - 821 ) ÷ 821] x 100 = 15.23%
Formula
Percentage change = [(946 - 821) / 821] x 100
Subtract the new number by the original number
946 - 821 = 125
125 ÷ 821 = 0.15225334957369063
0.15225334957369063 x 100 = 15.23%