70.4% is the change from 581 to 990
Calculation steps:
[( 990 - 581 ) ÷ 581] x 100 = 70.4%
Formula
Percentage change = [(990 - 581) / 581] x 100
Subtract the new number by the original number
990 - 581 = 409
409 ÷ 581 = 0.7039586919104991
0.7039586919104991 x 100 = 70.4%