15.24% is the change from 820 to 945
Calculation steps:
[( 945 - 820 ) ÷ 820] x 100 = 15.24%
Formula
Percentage change = [(945 - 820) / 820] x 100
Subtract the new number by the original number
945 - 820 = 125
125 ÷ 820 = 0.1524390243902439
0.1524390243902439 x 100 = 15.24%