68.9% is the change from 492 to 831
Calculation steps:
[( 831 - 492 ) ÷ 492] x 100 = 68.9%
Formula
Percentage change = [(831 - 492) / 492] x 100
Subtract the new number by the original number
831 - 492 = 339
339 ÷ 492 = 0.6890243902439024
0.6890243902439024 x 100 = 68.9%