-66.72% is the change from 610 to 203
Calculation steps:
[( 203 - 610 ) ÷ 610] x 100 = -66.72%
Formula
Percentage change = [(203 - 610) / 610] x 100
Subtract the new number by the original number
203 - 610 = -407
-407 ÷ 610 = -0.6672131147540984
-0.6672131147540984 x 100 = -66.72%