-17.1% is the change from 345 to 286
Calculation steps:
[( 286 - 345 ) ÷ 345] x 100 = -17.1%
Formula
Percentage change = [(286 - 345) / 345] x 100
Subtract the new number by the original number
286 - 345 = -59
-59 ÷ 345 = -0.17101449275362318
-0.17101449275362318 x 100 = -17.1%