2.33% is the change from 860 to 880
Calculation steps:
[( 880 - 860 ) ÷ 860] x 100 = 2.33%
Formula
Percentage change = [(880 - 860) / 860] x 100
Subtract the new number by the original number
880 - 860 = 20
20 ÷ 860 = 0.023255813953488372
0.023255813953488372 x 100 = 2.33%