-30.77% is the change from 494 to 342
Calculation steps:
[( 342 - 494 ) ÷ 494] x 100 = -30.77%
Formula
Percentage change = [(342 - 494) / 494] x 100
Subtract the new number by the original number
342 - 494 = -152
-152 ÷ 494 = -0.3076923076923077
-0.3076923076923077 x 100 = -30.77%