-61.62% is the change from 680 to 261
Calculation steps:
[( 261 - 680 ) ÷ 680] x 100 = -61.62%
Formula
Percentage change = [(261 - 680) / 680] x 100
Subtract the new number by the original number
261 - 680 = -419
-419 ÷ 680 = -0.6161764705882353
-0.6161764705882353 x 100 = -61.62%