-91.01% is the change from 556 to 50
Calculation steps:
[( 50 - 556 ) ÷ 556] x 100 = -91.01%
Formula
Percentage change = [(50 - 556) / 556] x 100
Subtract the new number by the original number
50 - 556 = -506
-506 ÷ 556 = -0.9100719424460432
-0.9100719424460432 x 100 = -91.01%