-55.75% is the change from 678 to 300
Calculation steps:
[( 300 - 678 ) ÷ 678] x 100 = -55.75%
Formula
Percentage change = [(300 - 678) / 678] x 100
Subtract the new number by the original number
300 - 678 = -378
-378 ÷ 678 = -0.5575221238938053
-0.5575221238938053 x 100 = -55.75%