-61.47% is the change from 815 to 314
Calculation steps:
[( 314 - 815 ) ÷ 815] x 100 = -61.47%
Formula
Percentage change = [(314 - 815) / 815] x 100
Subtract the new number by the original number
314 - 815 = -501
-501 ÷ 815 = -0.6147239263803681
-0.6147239263803681 x 100 = -61.47%