9.69% is the change from 588 to 645
Calculation steps:
[( 645 - 588 ) ÷ 588] x 100 = 9.69%
Formula
Percentage change = [(645 - 588) / 588] x 100
Subtract the new number by the original number
645 - 588 = 57
57 ÷ 588 = 0.09693877551020408
0.09693877551020408 x 100 = 9.69%