-66.01% is the change from 606 to 206
Calculation steps:
[( 206 - 606 ) ÷ 606] x 100 = -66.01%
Formula
Percentage change = [(206 - 606) / 606] x 100
Subtract the new number by the original number
206 - 606 = -400
-400 ÷ 606 = -0.6600660066006601
-0.6600660066006601 x 100 = -66.01%