-70.34% is the change from 816 to 242
Calculation steps:
[( 242 - 816 ) ÷ 816] x 100 = -70.34%
Formula
Percentage change = [(242 - 816) / 816] x 100
Subtract the new number by the original number
242 - 816 = -574
-574 ÷ 816 = -0.7034313725490197
-0.7034313725490197 x 100 = -70.34%