-29.71% is the change from 488 to 343
Calculation steps:
[( 343 - 488 ) ÷ 488] x 100 = -29.71%
Formula
Percentage change = [(343 - 488) / 488] x 100
Subtract the new number by the original number
343 - 488 = -145
-145 ÷ 488 = -0.29713114754098363
-0.29713114754098363 x 100 = -29.71%