-68.68% is the change from 645 to 202
Calculation steps:
[( 202 - 645 ) ÷ 645] x 100 = -68.68%
Formula
Percentage change = [(202 - 645) / 645] x 100
Subtract the new number by the original number
202 - 645 = -443
-443 ÷ 645 = -0.6868217054263566
-0.6868217054263566 x 100 = -68.68%