-34.2% is the change from 345 to 227
Calculation steps:
[( 227 - 345 ) ÷ 345] x 100 = -34.2%
Formula
Percentage change = [(227 - 345) / 345] x 100
Subtract the new number by the original number
227 - 345 = -118
-118 ÷ 345 = -0.34202898550724636
-0.34202898550724636 x 100 = -34.2%