134.75% is the change from 354 to 831
Calculation steps:
[( 831 - 354 ) ÷ 354] x 100 = 134.75%
Formula
Percentage change = [(831 - 354) / 354] x 100
Subtract the new number by the original number
831 - 354 = 477
477 ÷ 354 = 1.347457627118644
1.347457627118644 x 100 = 134.75%