-64% is the change from 950 to 342
Calculation steps:
[( 342 - 950 ) ÷ 950] x 100 = -64%
Formula
Percentage change = [(342 - 950) / 950] x 100
Subtract the new number by the original number
342 - 950 = -608
-608 ÷ 950 = -0.64
-0.64 x 100 = -64%
Example