19.88% is the change from 820 to 983
Calculation steps:
[( 983 - 820 ) ÷ 820] x 100 = 19.88%
Formula
Percentage change = [(983 - 820) / 820] x 100
Subtract the new number by the original number
983 - 820 = 163
163 ÷ 820 = 0.19878048780487806
0.19878048780487806 x 100 = 19.88%