78.28% is the change from 488 to 870
Calculation steps:
[( 870 - 488 ) ÷ 488] x 100 = 78.28%
Formula
Percentage change = [(870 - 488) / 488] x 100
Subtract the new number by the original number
870 - 488 = 382
382 ÷ 488 = 0.7827868852459017
0.7827868852459017 x 100 = 78.28%