69.86% is the change from 209 to 355
Calculation steps:
[( 355 - 209 ) ÷ 209] x 100 = 69.86%
Formula
Percentage change = [(355 - 209) / 209] x 100
Subtract the new number by the original number
355 - 209 = 146
146 ÷ 209 = 0.6985645933014354
0.6985645933014354 x 100 = 69.86%