-17.29% is the change from 347 to 287
Calculation steps:
[( 287 - 347 ) ÷ 347] x 100 = -17.29%
Formula
Percentage change = [(287 - 347) / 347] x 100
Subtract the new number by the original number
287 - 347 = -60
-60 ÷ 347 = -0.1729106628242075
-0.1729106628242075 x 100 = -17.29%