-36.99% is the change from 838 to 528
Calculation steps:
[( 528 - 838 ) ÷ 838] x 100 = -36.99%
Formula
Percentage change = [(528 - 838) / 838] x 100
Subtract the new number by the original number
528 - 838 = -310
-310 ÷ 838 = -0.36992840095465396
-0.36992840095465396 x 100 = -36.99%