-57.36% is the change from 870 to 371
Calculation steps:
[( 371 - 870 ) ÷ 870] x 100 = -57.36%
Formula
Percentage change = [(371 - 870) / 870] x 100
Subtract the new number by the original number
371 - 870 = -499
-499 ÷ 870 = -0.5735632183908046
-0.5735632183908046 x 100 = -57.36%