-21.61% is the change from 671 to 526
Calculation steps:
[( 526 - 671 ) ÷ 671] x 100 = -21.61%
Formula
Percentage change = [(526 - 671) / 671] x 100
Subtract the new number by the original number
526 - 671 = -145
-145 ÷ 671 = -0.21609538002980627
-0.21609538002980627 x 100 = -21.61%