91.71% is the change from 422 to 809
Calculation steps:
[( 809 - 422 ) ÷ 422] x 100 = 91.71%
Formula
Percentage change = [(809 - 422) / 422] x 100
Subtract the new number by the original number
809 - 422 = 387
387 ÷ 422 = 0.9170616113744076
0.9170616113744076 x 100 = 91.71%