19.71% is the change from 817 to 978
Calculation steps:
[( 978 - 817 ) ÷ 817] x 100 = 19.71%
Formula
Percentage change = [(978 - 817) / 817] x 100
Subtract the new number by the original number
978 - 817 = 161
161 ÷ 817 = 0.19706242350061198
0.19706242350061198 x 100 = 19.71%