-25.8% is the change from 849 to 630
Calculation steps:
[( 630 - 849 ) ÷ 849] x 100 = -25.8%
Formula
Percentage change = [(630 - 849) / 849] x 100
Subtract the new number by the original number
630 - 849 = -219
-219 ÷ 849 = -0.2579505300353357
-0.2579505300353357 x 100 = -25.8%