-54.72% is the change from 678 to 307
Calculation steps:
[( 307 - 678 ) ÷ 678] x 100 = -54.72%
Formula
Percentage change = [(307 - 678) / 678] x 100
Subtract the new number by the original number
307 - 678 = -371
-371 ÷ 678 = -0.5471976401179941
-0.5471976401179941 x 100 = -54.72%