-65.63% is the change from 870 to 299
Calculation steps:
[( 299 - 870 ) ÷ 870] x 100 = -65.63%
Formula
Percentage change = [(299 - 870) / 870] x 100
Subtract the new number by the original number
299 - 870 = -571
-571 ÷ 870 = -0.6563218390804598
-0.6563218390804598 x 100 = -65.63%