18.78% is the change from 820 to 974
Calculation steps:
[( 974 - 820 ) ÷ 820] x 100 = 18.78%
Formula
Percentage change = [(974 - 820) / 820] x 100
Subtract the new number by the original number
974 - 820 = 154
154 ÷ 820 = 0.1878048780487805
0.1878048780487805 x 100 = 18.78%