-30.73% is the change from 371 to 257
Calculation steps:
[( 257 - 371 ) ÷ 371] x 100 = -30.73%
Formula
Percentage change = [(257 - 371) / 371] x 100
Subtract the new number by the original number
257 - 371 = -114
-114 ÷ 371 = -0.30727762803234504
-0.30727762803234504 x 100 = -30.73%