20.63% is the change from 819 to 988
Calculation steps:
[( 988 - 819 ) ÷ 819] x 100 = 20.63%
Formula
Percentage change = [(988 - 819) / 819] x 100
Subtract the new number by the original number
988 - 819 = 169
169 ÷ 819 = 0.20634920634920634
0.20634920634920634 x 100 = 20.63%