-28.9% is the change from 481 to 342
Calculation steps:
[( 342 - 481 ) ÷ 481] x 100 = -28.9%
Formula
Percentage change = [(342 - 481) / 481] x 100
Subtract the new number by the original number
342 - 481 = -139
-139 ÷ 481 = -0.288981288981289
-0.288981288981289 x 100 = -28.9%