-43% is the change from 921 to 525
Calculation steps:
[( 525 - 921 ) ÷ 921] x 100 = -43%
Formula
Percentage change = [(525 - 921) / 921] x 100
Subtract the new number by the original number
525 - 921 = -396
-396 ÷ 921 = -0.42996742671009774
-0.42996742671009774 x 100 = -43%