-90.78% is the change from 206 to 19
Calculation steps:
[( 19 - 206 ) ÷ 206] x 100 = -90.78%
Formula
Percentage change = [(19 - 206) / 206] x 100
Subtract the new number by the original number
19 - 206 = -187
-187 ÷ 206 = -0.9077669902912622
-0.9077669902912622 x 100 = -90.78%