-18.37% is the change from 381 to 311
Calculation steps:
[( 311 - 381 ) ÷ 381] x 100 = -18.37%
Formula
Percentage change = [(311 - 381) / 381] x 100
Subtract the new number by the original number
311 - 381 = -70
-70 ÷ 381 = -0.1837270341207349
-0.1837270341207349 x 100 = -18.37%