-85.38% is the change from 342 to 50
Calculation steps:
[( 50 - 342 ) ÷ 342] x 100 = -85.38%
Formula
Percentage change = [(50 - 342) / 342] x 100
Subtract the new number by the original number
50 - 342 = -292
-292 ÷ 342 = -0.8538011695906432
-0.8538011695906432 x 100 = -85.38%