-48.62% is the change from 870 to 447
Calculation steps:
[( 447 - 870 ) ÷ 870] x 100 = -48.62%
Formula
Percentage change = [(447 - 870) / 870] x 100
Subtract the new number by the original number
447 - 870 = -423
-423 ÷ 870 = -0.4862068965517241
-0.4862068965517241 x 100 = -48.62%