-68.55% is the change from 830 to 261
Calculation steps:
[( 261 - 830 ) ÷ 830] x 100 = -68.55%
Formula
Percentage change = [(261 - 830) / 830] x 100
Subtract the new number by the original number
261 - 830 = -569
-569 ÷ 830 = -0.6855421686746987
-0.6855421686746987 x 100 = -68.55%