82.91% is the change from 351 to 642
Calculation steps:
[( 642 - 351 ) ÷ 351] x 100 = 82.91%
Formula
Percentage change = [(642 - 351) / 351] x 100
Subtract the new number by the original number
642 - 351 = 291
291 ÷ 351 = 0.8290598290598291
0.8290598290598291 x 100 = 82.91%