-69.49% is the change from 849 to 259
Calculation steps:
[( 259 - 849 ) ÷ 849] x 100 = -69.49%
Formula
Percentage change = [(259 - 849) / 849] x 100
Subtract the new number by the original number
259 - 849 = -590
-590 ÷ 849 = -0.6949352179034158
-0.6949352179034158 x 100 = -69.49%