19.56% is the change from 813 to 972
Calculation steps:
[( 972 - 813 ) ÷ 813] x 100 = 19.56%
Formula
Percentage change = [(972 - 813) / 813] x 100
Subtract the new number by the original number
972 - 813 = 159
159 ÷ 813 = 0.19557195571955718
0.19557195571955718 x 100 = 19.56%