-67.56% is the change from 635 to 206
Calculation steps:
[( 206 - 635 ) ÷ 635] x 100 = -67.56%
Formula
Percentage change = [(206 - 635) / 635] x 100
Subtract the new number by the original number
206 - 635 = -429
-429 ÷ 635 = -0.6755905511811023
-0.6755905511811023 x 100 = -67.56%