14.83% is the change from 870 to 999
Calculation steps:
[( 999 - 870 ) ÷ 870] x 100 = 14.83%
Formula
Percentage change = [(999 - 870) / 870] x 100
Subtract the new number by the original number
999 - 870 = 129
129 ÷ 870 = 0.1482758620689655
0.1482758620689655 x 100 = 14.83%