-64.34% is the change from 959 to 342
Calculation steps:
[( 342 - 959 ) ÷ 959] x 100 = -64.34%
Formula
Percentage change = [(342 - 959) / 959] x 100
Subtract the new number by the original number
342 - 959 = -617
-617 ÷ 959 = -0.643378519290928
-0.643378519290928 x 100 = -64.34%