-18.99% is the change from 811 to 657
Calculation steps:
[( 657 - 811 ) ÷ 811] x 100 = -18.99%
Formula
Percentage change = [(657 - 811) / 811] x 100
Subtract the new number by the original number
657 - 811 = -154
-154 ÷ 811 = -0.18988902589395806
-0.18988902589395806 x 100 = -18.99%