19% is the change from 642 to 764
Calculation steps:
[( 764 - 642 ) ÷ 642] x 100 = 19%
Formula
Percentage change = [(764 - 642) / 642] x 100
Subtract the new number by the original number
764 - 642 = 122
122 ÷ 642 = 0.19003115264797507
0.19003115264797507 x 100 = 19%