-42.35% is the change from 536 to 309
Calculation steps:
[( 309 - 536 ) ÷ 536] x 100 = -42.35%
Formula
Percentage change = [(309 - 536) / 536] x 100
Subtract the new number by the original number
309 - 536 = -227
-227 ÷ 536 = -0.42350746268656714
-0.42350746268656714 x 100 = -42.35%