19.56% is the change from 818 to 978
Calculation steps:
[( 978 - 818 ) ÷ 818] x 100 = 19.56%
Formula
Percentage change = [(978 - 818) / 818] x 100
Subtract the new number by the original number
978 - 818 = 160
160 ÷ 818 = 0.19559902200489
0.19559902200489 x 100 = 19.56%