-57.18% is the change from 397 to 170
Calculation steps:
[( 170 - 397 ) ÷ 397] x 100 = -57.18%
Formula
Percentage change = [(170 - 397) / 397] x 100
Subtract the new number by the original number
170 - 397 = -227
-227 ÷ 397 = -0.5717884130982368
-0.5717884130982368 x 100 = -57.18%