-38.18% is the change from 275 to 170
Calculation steps:
[( 170 - 275 ) ÷ 275] x 100 = -38.18%
Formula
Percentage change = [(170 - 275) / 275] x 100
Subtract the new number by the original number
170 - 275 = -105
-105 ÷ 275 = -0.38181818181818183
-0.38181818181818183 x 100 = -38.18%