-66.61% is the change from 617 to 206
Calculation steps:
[( 206 - 617 ) ÷ 617] x 100 = -66.61%
Formula
Percentage change = [(206 - 617) / 617] x 100
Subtract the new number by the original number
206 - 617 = -411
-411 ÷ 617 = -0.6661264181523501
-0.6661264181523501 x 100 = -66.61%