-40.86% is the change from 350 to 207
Calculation steps:
[( 207 - 350 ) ÷ 350] x 100 = -40.86%
Formula
Percentage change = [(207 - 350) / 350] x 100
Subtract the new number by the original number
207 - 350 = -143
-143 ÷ 350 = -0.4085714285714286
-0.4085714285714286 x 100 = -40.86%