-19.95% is the change from 431 to 345
Calculation steps:
[( 345 - 431 ) ÷ 431] x 100 = -19.95%
Formula
Percentage change = [(345 - 431) / 431] x 100
Subtract the new number by the original number
345 - 431 = -86
-86 ÷ 431 = -0.19953596287703015
-0.19953596287703015 x 100 = -19.95%