-0.74% is the change from 270 to 268
Calculation steps:
[( 268 - 270 ) ÷ 270] x 100 = -0.74%
Formula
Percentage change = [(268 - 270) / 270] x 100
Subtract the new number by the original number
268 - 270 = -2
-2 ÷ 270 = -0.007407407407407408
-0.007407407407407408 x 100 = -0.74%