-0.22% is the change from 913 to 911
Calculation steps:
[( 911 - 913 ) ÷ 913] x 100 = -0.22%
Formula
Percentage change = [(911 - 913) / 913] x 100
Subtract the new number by the original number
911 - 913 = -2
-2 ÷ 913 = -0.002190580503833516
-0.002190580503833516 x 100 = -0.22%