-69.24% is the change from 634 to 195
Calculation steps:
[( 195 - 634 ) ÷ 634] x 100 = -69.24%
Formula
Percentage change = [(195 - 634) / 634] x 100
Subtract the new number by the original number
195 - 634 = -439
-439 ÷ 634 = -0.692429022082019
-0.692429022082019 x 100 = -69.24%