91000% is the change from 1 to 911
Calculation steps:
[( 911 - 1 ) ÷ 1] x 100 = 91000%
Formula
Percentage change = [(911 - 1) / 1] x 100
Subtract the new number by the original number
911 - 1 = 910
910 ÷ 1 = 910
910 x 100 = 91000%
Example