-51.34% is the change from 857 to 417
Calculation steps:
[( 417 - 857 ) ÷ 857] x 100 = -51.34%
Formula
Percentage change = [(417 - 857) / 857] x 100
Subtract the new number by the original number
417 - 857 = -440
-440 ÷ 857 = -0.5134189031505251
-0.5134189031505251 x 100 = -51.34%