66.86% is the change from 350 to 584
Calculation steps:
[( 584 - 350 ) ÷ 350] x 100 = 66.86%
Formula
Percentage change = [(584 - 350) / 350] x 100
Subtract the new number by the original number
584 - 350 = 234
234 ÷ 350 = 0.6685714285714286
0.6685714285714286 x 100 = 66.86%