-69.31% is the change from 870 to 267
Calculation steps:
[( 267 - 870 ) ÷ 870] x 100 = -69.31%
Formula
Percentage change = [(267 - 870) / 870] x 100
Subtract the new number by the original number
267 - 870 = -603
-603 ÷ 870 = -0.6931034482758621
-0.6931034482758621 x 100 = -69.31%