-94.6% is the change from 556 to 30
Calculation steps:
[( 30 - 556 ) ÷ 556] x 100 = -94.6%
Formula
Percentage change = [(30 - 556) / 556] x 100
Subtract the new number by the original number
30 - 556 = -526
-526 ÷ 556 = -0.9460431654676259
-0.9460431654676259 x 100 = -94.6%