-70.92% is the change from 870 to 253
Calculation steps:
[( 253 - 870 ) ÷ 870] x 100 = -70.92%
Formula
Percentage change = [(253 - 870) / 870] x 100
Subtract the new number by the original number
253 - 870 = -617
-617 ÷ 870 = -0.7091954022988506
-0.7091954022988506 x 100 = -70.92%