Use 'put at' when discussing numbers or outcomes that aren't exact but are educated guesses. The number of participants is put at around 100.
Pro Tip 2/3
Uncertain Estimates
'Put at' implies there is uncertainty, so it's more about approximation than precise calculation. The release date was put at late 2023.
Pro Tip 3/3
Unofficial Figures
Use 'put at' for unofficial or informal estimates, which can differ from the official or exact figures. Attendance was put at over 300, though official numbers were lower.