20.37% is the change from 820 to 987
Calculation steps:
[( 987 - 820 ) ÷ 820] x 100 = 20.37%
Formula
Percentage change = [(987 - 820) / 820] x 100
Subtract the new number by the original number
987 - 820 = 167
167 ÷ 820 = 0.20365853658536584
0.20365853658536584 x 100 = 20.37%