-58.19% is the change from 397 to 166
Calculation steps:
[( 166 - 397 ) ÷ 397] x 100 = -58.19%
Formula
Percentage change = [(166 - 397) / 397] x 100
Subtract the new number by the original number
166 - 397 = -231
-231 ÷ 397 = -0.5818639798488665
-0.5818639798488665 x 100 = -58.19%