-85.97% is the change from 556 to 78
Calculation steps:
[( 78 - 556 ) ÷ 556] x 100 = -85.97%
Formula
Percentage change = [(78 - 556) / 556] x 100
Subtract the new number by the original number
78 - 556 = -478
-478 ÷ 556 = -0.8597122302158273
-0.8597122302158273 x 100 = -85.97%