85.43% is the change from 453 to 840
Calculation steps:
[( 840 - 453 ) ÷ 453] x 100 = 85.43%
Formula
Percentage change = [(840 - 453) / 453] x 100
Subtract the new number by the original number
840 - 453 = 387
387 ÷ 453 = 0.8543046357615894
0.8543046357615894 x 100 = 85.43%