12.99% is the change from 870 to 983
Calculation steps:
[( 983 - 870 ) ÷ 870] x 100 = 12.99%
Formula
Percentage change = [(983 - 870) / 870] x 100
Subtract the new number by the original number
983 - 870 = 113
113 ÷ 870 = 0.12988505747126436
0.12988505747126436 x 100 = 12.99%