-30.62% is the change from 454 to 315
Calculation steps:
[( 315 - 454 ) ÷ 454] x 100 = -30.62%
Formula
Percentage change = [(315 - 454) / 454] x 100
Subtract the new number by the original number
315 - 454 = -139
-139 ÷ 454 = -0.30616740088105726
-0.30616740088105726 x 100 = -30.62%