-32.27% is the change from 251 to 170
Calculation steps:
[( 170 - 251 ) ÷ 251] x 100 = -32.27%
Formula
Percentage change = [(170 - 251) / 251] x 100
Subtract the new number by the original number
170 - 251 = -81
-81 ÷ 251 = -0.32270916334661354
-0.32270916334661354 x 100 = -32.27%