-41.58% is the change from 291 to 170
Calculation steps:
[( 170 - 291 ) ÷ 291] x 100 = -41.58%
Formula
Percentage change = [(170 - 291) / 291] x 100
Subtract the new number by the original number
170 - 291 = -121
-121 ÷ 291 = -0.41580756013745707
-0.41580756013745707 x 100 = -41.58%