-23.34% is the change from 347 to 266
Calculation steps:
[( 266 - 347 ) ÷ 347] x 100 = -23.34%
Formula
Percentage change = [(266 - 347) / 347] x 100
Subtract the new number by the original number
266 - 347 = -81
-81 ÷ 347 = -0.2334293948126801
-0.2334293948126801 x 100 = -23.34%