-36.35% is the change from 839 to 534
Calculation steps:
[( 534 - 839 ) ÷ 839] x 100 = -36.35%
Formula
Percentage change = [(534 - 839) / 839] x 100
Subtract the new number by the original number
534 - 839 = -305
-305 ÷ 839 = -0.3635280095351609
-0.3635280095351609 x 100 = -36.35%