-70.3% is the change from 559 to 166
Calculation steps:
[( 166 - 559 ) ÷ 559] x 100 = -70.3%
Formula
Percentage change = [(166 - 559) / 559] x 100
Subtract the new number by the original number
166 - 559 = -393
-393 ÷ 559 = -0.7030411449016101
-0.7030411449016101 x 100 = -70.3%