-67.13% is the change from 645 to 212
Calculation steps:
[( 212 - 645 ) ÷ 645] x 100 = -67.13%
Formula
Percentage change = [(212 - 645) / 645] x 100
Subtract the new number by the original number
212 - 645 = -433
-433 ÷ 645 = -0.6713178294573643
-0.6713178294573643 x 100 = -67.13%