800.99% is the change from 101 to 910
Calculation steps:
[( 910 - 101 ) ÷ 101] x 100 = 800.99%
Formula
Percentage change = [(910 - 101) / 101] x 100
Subtract the new number by the original number
910 - 101 = 809
809 ÷ 101 = 8.009900990099009
8.009900990099009 x 100 = 800.99%