18.97% is the change from 817 to 972
Calculation steps:
[( 972 - 817 ) ÷ 817] x 100 = 18.97%
Formula
Percentage change = [(972 - 817) / 817] x 100
Subtract the new number by the original number
972 - 817 = 155
155 ÷ 817 = 0.189718482252142
0.189718482252142 x 100 = 18.97%