-18.45% is the change from 645 to 526
Calculation steps:
[( 526 - 645 ) ÷ 645] x 100 = -18.45%
Formula
Percentage change = [(526 - 645) / 645] x 100
Subtract the new number by the original number
526 - 645 = -119
-119 ÷ 645 = -0.18449612403100776
-0.18449612403100776 x 100 = -18.45%