-48.73% is the change from 667 to 342
Calculation steps:
[( 342 - 667 ) ÷ 667] x 100 = -48.73%
Formula
Percentage change = [(342 - 667) / 667] x 100
Subtract the new number by the original number
342 - 667 = -325
-325 ÷ 667 = -0.487256371814093
-0.487256371814093 x 100 = -48.73%