-34.4% is the change from 343 to 225
Calculation steps:
[( 225 - 343 ) ÷ 343] x 100 = -34.4%
Formula
Percentage change = [(225 - 343) / 343] x 100
Subtract the new number by the original number
225 - 343 = -118
-118 ÷ 343 = -0.34402332361516036
-0.34402332361516036 x 100 = -34.4%