42.99% is the change from 642 to 918
Calculation steps:
[( 918 - 642 ) ÷ 642] x 100 = 42.99%
Formula
Percentage change = [(918 - 642) / 642] x 100
Subtract the new number by the original number
918 - 642 = 276
276 ÷ 642 = 0.42990654205607476
0.42990654205607476 x 100 = 42.99%