-21.13% is the change from 691 to 545
Calculation steps:
[( 545 - 691 ) ÷ 691] x 100 = -21.13%
Formula
Percentage change = [(545 - 691) / 691] x 100
Subtract the new number by the original number
545 - 691 = -146
-146 ÷ 691 = -0.21128798842257598
-0.21128798842257598 x 100 = -21.13%