69.86% is the change from 345 to 586
Calculation steps:
[( 586 - 345 ) ÷ 345] x 100 = 69.86%
Formula
Percentage change = [(586 - 345) / 345] x 100
Subtract the new number by the original number
586 - 345 = 241
241 ÷ 345 = 0.6985507246376812
0.6985507246376812 x 100 = 69.86%