-71.84% is the change from 870 to 245
Calculation steps:
[( 245 - 870 ) ÷ 870] x 100 = -71.84%
Formula
Percentage change = [(245 - 870) / 870] x 100
Subtract the new number by the original number
245 - 870 = -625
-625 ÷ 870 = -0.7183908045977011
-0.7183908045977011 x 100 = -71.84%