-14.29% is the change from 350 to 300
Calculation steps:
[( 300 - 350 ) ÷ 350] x 100 = -14.29%
Formula
Percentage change = [(300 - 350) / 350] x 100
Subtract the new number by the original number
300 - 350 = -50
-50 ÷ 350 = -0.14285714285714285
-0.14285714285714285 x 100 = -14.29%