-22.53% is the change from 839 to 650
Calculation steps:
[( 650 - 839 ) ÷ 839] x 100 = -22.53%
Formula
Percentage change = [(650 - 839) / 839] x 100
Subtract the new number by the original number
650 - 839 = -189
-189 ÷ 839 = -0.22526817640047675
-0.22526817640047675 x 100 = -22.53%