-12.17% is the change from 345 to 303
Calculation steps:
[( 303 - 345 ) ÷ 345] x 100 = -12.17%
Formula
Percentage change = [(303 - 345) / 345] x 100
Subtract the new number by the original number
303 - 345 = -42
-42 ÷ 345 = -0.12173913043478261
-0.12173913043478261 x 100 = -12.17%