-70.09% is the change from 555 to 166
Calculation steps:
[( 166 - 555 ) ÷ 555] x 100 = -70.09%
Formula
Percentage change = [(166 - 555) / 555] x 100
Subtract the new number by the original number
166 - 555 = -389
-389 ÷ 555 = -0.7009009009009008
-0.7009009009009008 x 100 = -70.09%