-71.51% is the change from 351 to 100
Calculation steps:
[( 100 - 351 ) ÷ 351] x 100 = -71.51%
Formula
Percentage change = [(100 - 351) / 351] x 100
Subtract the new number by the original number
100 - 351 = -251
-251 ÷ 351 = -0.7150997150997151
-0.7150997150997151 x 100 = -71.51%