-41.94% is the change from 527 to 306
Calculation steps:
[( 306 - 527 ) ÷ 527] x 100 = -41.94%
Formula
Percentage change = [(306 - 527) / 527] x 100
Subtract the new number by the original number
306 - 527 = -221
-221 ÷ 527 = -0.41935483870967744
-0.41935483870967744 x 100 = -41.94%