-39.83% is the change from 349 to 210
Calculation steps:
[( 210 - 349 ) ÷ 349] x 100 = -39.83%
Formula
Percentage change = [(210 - 349) / 349] x 100
Subtract the new number by the original number
210 - 349 = -139
-139 ÷ 349 = -0.3982808022922636
-0.3982808022922636 x 100 = -39.83%