-24.48% is the change from 678 to 512
Calculation steps:
[( 512 - 678 ) ÷ 678] x 100 = -24.48%
Formula
Percentage change = [(512 - 678) / 678] x 100
Subtract the new number by the original number
512 - 678 = -166
-166 ÷ 678 = -0.2448377581120944
-0.2448377581120944 x 100 = -24.48%