17.91% is the change from 642 to 757
Calculation steps:
[( 757 - 642 ) ÷ 642] x 100 = 17.91%
Formula
Percentage change = [(757 - 642) / 642] x 100
Subtract the new number by the original number
757 - 642 = 115
115 ÷ 642 = 0.1791277258566978
0.1791277258566978 x 100 = 17.91%