136.75% is the change from 351 to 831
Calculation steps:
[( 831 - 351 ) ÷ 351] x 100 = 136.75%
Formula
Percentage change = [(831 - 351) / 351] x 100
Subtract the new number by the original number
831 - 351 = 480
480 ÷ 351 = 1.3675213675213675
1.3675213675213675 x 100 = 136.75%