-43% is the change from 914 to 521
Calculation steps:
[( 521 - 914 ) ÷ 914] x 100 = -43%
Formula
Percentage change = [(521 - 914) / 914] x 100
Subtract the new number by the original number
521 - 914 = -393
-393 ÷ 914 = -0.4299781181619256
-0.4299781181619256 x 100 = -43%