-74.81% is the change from 270 to 68
Calculation steps:
[( 68 - 270 ) ÷ 270] x 100 = -74.81%
Formula
Percentage change = [(68 - 270) / 270] x 100
Subtract the new number by the original number
68 - 270 = -202
-202 ÷ 270 = -0.7481481481481481
-0.7481481481481481 x 100 = -74.81%