-12.94% is the change from 402 to 350
Calculation steps:
[( 350 - 402 ) ÷ 402] x 100 = -12.94%
Formula
Percentage change = [(350 - 402) / 402] x 100
Subtract the new number by the original number
350 - 402 = -52
-52 ÷ 402 = -0.12935323383084577
-0.12935323383084577 x 100 = -12.94%