-48.22% is the change from 871 to 451
Calculation steps:
[( 451 - 871 ) ÷ 871] x 100 = -48.22%
Formula
Percentage change = [(451 - 871) / 871] x 100
Subtract the new number by the original number
451 - 871 = -420
-420 ÷ 871 = -0.48220436280137774
-0.48220436280137774 x 100 = -48.22%