-68.89% is the change from 839 to 261
Calculation steps:
[( 261 - 839 ) ÷ 839] x 100 = -68.89%
Formula
Percentage change = [(261 - 839) / 839] x 100
Subtract the new number by the original number
261 - 839 = -578
-578 ÷ 839 = -0.6889153754469607
-0.6889153754469607 x 100 = -68.89%