18.66% is the change from 820 to 973
Calculation steps:
[( 973 - 820 ) ÷ 820] x 100 = 18.66%
Formula
Percentage change = [(973 - 820) / 820] x 100
Subtract the new number by the original number
973 - 820 = 153
153 ÷ 820 = 0.18658536585365854
0.18658536585365854 x 100 = 18.66%