52.49% is the change from 642 to 979
Calculation steps:
[( 979 - 642 ) ÷ 642] x 100 = 52.49%
Formula
Percentage change = [(979 - 642) / 642] x 100
Subtract the new number by the original number
979 - 642 = 337
337 ÷ 642 = 0.5249221183800623
0.5249221183800623 x 100 = 52.49%