-67.2% is the change from 628 to 206
Calculation steps:
[( 206 - 628 ) ÷ 628] x 100 = -67.2%
Formula
Percentage change = [(206 - 628) / 628] x 100
Subtract the new number by the original number
206 - 628 = -422
-422 ÷ 628 = -0.6719745222929936
-0.6719745222929936 x 100 = -67.2%