-42.7% is the change from 534 to 306
Calculation steps:
[( 306 - 534 ) ÷ 534] x 100 = -42.7%
Formula
Percentage change = [(306 - 534) / 534] x 100
Subtract the new number by the original number
306 - 534 = -228
-228 ÷ 534 = -0.42696629213483145
-0.42696629213483145 x 100 = -42.7%