83.44% is the change from 453 to 831
Calculation steps:
[( 831 - 453 ) ÷ 453] x 100 = 83.44%
Formula
Percentage change = [(831 - 453) / 453] x 100
Subtract the new number by the original number
831 - 453 = 378
378 ÷ 453 = 0.8344370860927153
0.8344370860927153 x 100 = 83.44%