8.9% is the change from 820 to 893
Calculation steps:
[( 893 - 820 ) ÷ 820] x 100 = 8.9%
Formula
Percentage change = [(893 - 820) / 820] x 100
Subtract the new number by the original number
893 - 820 = 73
73 ÷ 820 = 0.08902439024390243
0.08902439024390243 x 100 = 8.9%