-65.86% is the change from 870 to 297
Calculation steps:
[( 297 - 870 ) ÷ 870] x 100 = -65.86%
Formula
Percentage change = [(297 - 870) / 870] x 100
Subtract the new number by the original number
297 - 870 = -573
-573 ÷ 870 = -0.6586206896551724
-0.6586206896551724 x 100 = -65.86%