0.22% is the change from 913 to 915
Calculation steps:
[( 915 - 913 ) ÷ 913] x 100 = 0.22%
Formula
Percentage change = [(915 - 913) / 913] x 100
Subtract the new number by the original number
915 - 913 = 2
2 ÷ 913 = 0.002190580503833516
0.002190580503833516 x 100 = 0.22%