-51.46% is the change from 206 to 100
Calculation steps:
[( 100 - 206 ) ÷ 206] x 100 = -51.46%
Formula
Percentage change = [(100 - 206) / 206] x 100
Subtract the new number by the original number
100 - 206 = -106
-106 ÷ 206 = -0.5145631067961165
-0.5145631067961165 x 100 = -51.46%