-25.96% is the change from 678 to 502
Calculation steps:
[( 502 - 678 ) ÷ 678] x 100 = -25.96%
Formula
Percentage change = [(502 - 678) / 678] x 100
Subtract the new number by the original number
502 - 678 = -176
-176 ÷ 678 = -0.25958702064896755
-0.25958702064896755 x 100 = -25.96%