19.44% is the change from 818 to 977
Calculation steps:
[( 977 - 818 ) ÷ 818] x 100 = 19.44%
Formula
Percentage change = [(977 - 818) / 818] x 100
Subtract the new number by the original number
977 - 818 = 159
159 ÷ 818 = 0.19437652811735942
0.19437652811735942 x 100 = 19.44%