-59.09% is the change from 836 to 342
Calculation steps:
[( 342 - 836 ) ÷ 836] x 100 = -59.09%
Formula
Percentage change = [(342 - 836) / 836] x 100
Subtract the new number by the original number
342 - 836 = -494
-494 ÷ 836 = -0.5909090909090909
-0.5909090909090909 x 100 = -59.09%