-89.47% is the change from 342 to 36
Calculation steps:
[( 36 - 342 ) ÷ 342] x 100 = -89.47%
Formula
Percentage change = [(36 - 342) / 342] x 100
Subtract the new number by the original number
36 - 342 = -306
-306 ÷ 342 = -0.8947368421052632
-0.8947368421052632 x 100 = -89.47%