-27.34% is the change from 534 to 388
Calculation steps:
[( 388 - 534 ) ÷ 534] x 100 = -27.34%
Formula
Percentage change = [(388 - 534) / 534] x 100
Subtract the new number by the original number
388 - 534 = -146
-146 ÷ 534 = -0.27340823970037453
-0.27340823970037453 x 100 = -27.34%