-3.57% is the change from 645 to 622
Calculation steps:
[( 622 - 645 ) ÷ 645] x 100 = -3.57%
Formula
Percentage change = [(622 - 645) / 645] x 100
Subtract the new number by the original number
622 - 645 = -23
-23 ÷ 645 = -0.03565891472868217
-0.03565891472868217 x 100 = -3.57%