-94.05% is the change from 336 to 20
Calculation steps:
[( 20 - 336 ) ÷ 336] x 100 = -94.05%
Formula
Percentage change = [(20 - 336) / 336] x 100
Subtract the new number by the original number
20 - 336 = -316
-316 ÷ 336 = -0.9404761904761905
-0.9404761904761905 x 100 = -94.05%