81.9% is the change from 337 to 613
Calculation steps:
[( 613 - 337 ) ÷ 337] x 100 = 81.9%
Formula
Percentage change = [(613 - 337) / 337] x 100
Subtract the new number by the original number
613 - 337 = 276
276 ÷ 337 = 0.8189910979228486
0.8189910979228486 x 100 = 81.9%