15.59% is the change from 821 to 949
Calculation steps:
[( 949 - 821 ) ÷ 821] x 100 = 15.59%
Formula
Percentage change = [(949 - 821) / 821] x 100
Subtract the new number by the original number
949 - 821 = 128
128 ÷ 821 = 0.1559074299634592
0.1559074299634592 x 100 = 15.59%