2.57% is the change from 972 to 997
Calculation steps:
[( 997 - 972 ) ÷ 972] x 100 = 2.57%
Formula
Percentage change = [(997 - 972) / 972] x 100
Subtract the new number by the original number
997 - 972 = 25
25 ÷ 972 = 0.0257201646090535
0.0257201646090535 x 100 = 2.57%