87.35% is the change from 340 to 637
Calculation steps:
[( 637 - 340 ) ÷ 340] x 100 = 87.35%
Formula
Percentage change = [(637 - 340) / 340] x 100
Subtract the new number by the original number
637 - 340 = 297
297 ÷ 340 = 0.8735294117647059
0.8735294117647059 x 100 = 87.35%