77.32% is the change from 97 to 172
Calculation steps:
[( 172 - 97 ) ÷ 97] x 100 = 77.32%
Formula
Percentage change = [(172 - 97) / 97] x 100
Subtract the new number by the original number
172 - 97 = 75
75 ÷ 97 = 0.7731958762886598
0.7731958762886598 x 100 = 77.32%