-19.36% is the change from 816 to 658
Calculation steps:
[( 658 - 816 ) ÷ 816] x 100 = -19.36%
Formula
Percentage change = [(658 - 816) / 816] x 100
Subtract the new number by the original number
658 - 816 = -158
-158 ÷ 816 = -0.19362745098039216
-0.19362745098039216 x 100 = -19.36%