2.38% is the change from 84 to 86
Calculation steps:
[( 86 - 84 ) ÷ 84] x 100 = 2.38%
Formula
Percentage change = [(86 - 84) / 84] x 100
Subtract the new number by the original number
86 - 84 = 2
2 ÷ 84 = 0.023809523809523808
0.023809523809523808 x 100 = 2.38%