-21.87% is the change from 343 to 268
Calculation steps:
[( 268 - 343 ) ÷ 343] x 100 = -21.87%
Formula
Percentage change = [(268 - 343) / 343] x 100
Subtract the new number by the original number
268 - 343 = -75
-75 ÷ 343 = -0.21865889212827988
-0.21865889212827988 x 100 = -21.87%