-53.47% is the change from 677 to 315
Calculation steps:
[( 315 - 677 ) ÷ 677] x 100 = -53.47%
Formula
Percentage change = [(315 - 677) / 677] x 100
Subtract the new number by the original number
315 - 677 = -362
-362 ÷ 677 = -0.534711964549483
-0.534711964549483 x 100 = -53.47%