-13.74% is the change from 313 to 270
Calculation steps:
[( 270 - 313 ) ÷ 313] x 100 = -13.74%
Formula
Percentage change = [(270 - 313) / 313] x 100
Subtract the new number by the original number
270 - 313 = -43
-43 ÷ 313 = -0.13738019169329074
-0.13738019169329074 x 100 = -13.74%