-68.63% is the change from 644 to 202
Calculation steps:
[( 202 - 644 ) ÷ 644] x 100 = -68.63%
Formula
Percentage change = [(202 - 644) / 644] x 100
Subtract the new number by the original number
202 - 644 = -442
-442 ÷ 644 = -0.6863354037267081
-0.6863354037267081 x 100 = -68.63%