-34.15% is the change from 410 to 270
Calculation steps:
[( 270 - 410 ) ÷ 410] x 100 = -34.15%
Formula
Percentage change = [(270 - 410) / 410] x 100
Subtract the new number by the original number
270 - 410 = -140
-140 ÷ 410 = -0.34146341463414637
-0.34146341463414637 x 100 = -34.15%