-21.12% is the change from 677 to 534
Calculation steps:
[( 534 - 677 ) ÷ 677] x 100 = -21.12%
Formula
Percentage change = [(534 - 677) / 677] x 100
Subtract the new number by the original number
534 - 677 = -143
-143 ÷ 677 = -0.21122599704579026
-0.21122599704579026 x 100 = -21.12%