-90.05% is the change from 201 to 20
Calculation steps:
[( 20 - 201 ) ÷ 201] x 100 = -90.05%
Formula
Percentage change = [(20 - 201) / 201] x 100
Subtract the new number by the original number
20 - 201 = -181
-181 ÷ 201 = -0.900497512437811
-0.900497512437811 x 100 = -90.05%