-18.98% is the change from 527 to 427
Calculation steps:
[( 427 - 527 ) ÷ 527] x 100 = -18.98%
Formula
Percentage change = [(427 - 527) / 527] x 100
Subtract the new number by the original number
427 - 527 = -100
-100 ÷ 527 = -0.18975332068311196
-0.18975332068311196 x 100 = -18.98%