-69.77% is the change from 870 to 263
Calculation steps:
[( 263 - 870 ) ÷ 870] x 100 = -69.77%
Formula
Percentage change = [(263 - 870) / 870] x 100
Subtract the new number by the original number
263 - 870 = -607
-607 ÷ 870 = -0.6977011494252874
-0.6977011494252874 x 100 = -69.77%