-61.64% is the change from 816 to 313
Calculation steps:
[( 313 - 816 ) ÷ 816] x 100 = -61.64%
Formula
Percentage change = [(313 - 816) / 816] x 100
Subtract the new number by the original number
313 - 816 = -503
-503 ÷ 816 = -0.616421568627451
-0.616421568627451 x 100 = -61.64%