-71.86% is the change from 590 to 166
Calculation steps:
[( 166 - 590 ) ÷ 590] x 100 = -71.86%
Formula
Percentage change = [(166 - 590) / 590] x 100
Subtract the new number by the original number
166 - 590 = -424
-424 ÷ 590 = -0.7186440677966102
-0.7186440677966102 x 100 = -71.86%