-85.37% is the change from 205 to 30
Calculation steps:
[( 30 - 205 ) ÷ 205] x 100 = -85.37%
Formula
Percentage change = [(30 - 205) / 205] x 100
Subtract the new number by the original number
30 - 205 = -175
-175 ÷ 205 = -0.8536585365853658
-0.8536585365853658 x 100 = -85.37%