19.22% is the change from 645 to 769
Calculation steps:
[( 769 - 645 ) ÷ 645] x 100 = 19.22%
Formula
Percentage change = [(769 - 645) / 645] x 100
Subtract the new number by the original number
769 - 645 = 124
124 ÷ 645 = 0.19224806201550387
0.19224806201550387 x 100 = 19.22%