-22.86% is the change from 398 to 307
Calculation steps:
[( 307 - 398 ) ÷ 398] x 100 = -22.86%
Formula
Percentage change = [(307 - 398) / 398] x 100
Subtract the new number by the original number
307 - 398 = -91
-91 ÷ 398 = -0.228643216080402
-0.228643216080402 x 100 = -22.86%