-17.32% is the change from 381 to 315
Calculation steps:
[( 315 - 381 ) ÷ 381] x 100 = -17.32%
Formula
Percentage change = [(315 - 381) / 381] x 100
Subtract the new number by the original number
315 - 381 = -66
-66 ÷ 381 = -0.1732283464566929
-0.1732283464566929 x 100 = -17.32%