-11.76% is the change from 391 to 345
Calculation steps:
[( 345 - 391 ) ÷ 391] x 100 = -11.76%
Formula
Percentage change = [(345 - 391) / 391] x 100
Subtract the new number by the original number
345 - 391 = -46
-46 ÷ 391 = -0.11764705882352941
-0.11764705882352941 x 100 = -11.76%