-53.54% is the change from 678 to 315
Calculation steps:
[( 315 - 678 ) ÷ 678] x 100 = -53.54%
Formula
Percentage change = [(315 - 678) / 678] x 100
Subtract the new number by the original number
315 - 678 = -363
-363 ÷ 678 = -0.5353982300884956
-0.5353982300884956 x 100 = -53.54%